car. We tend to be locked in past thinking. We may see a lot of kik this kind of product recently, it also very wants to innovate, it is compared with IM, compared with the text message, the only big benefit is to be able to send a message, the other party read not, but this brings different user experience. Of course it also useful your address book, in the past many companies can do, but did not do, it once done will find that the virus spread is v
requirements, we begin to try the solution, which is like finding the right tools from a bunch of tools to meet the essential needs; the essence of product design is to weaken the concept of tools, reduce the cost of selection, and shorten the distance between users and requirements.
Symbian Mobile internet need to set up "access point", take China Mobile network, there are mobile MMS, mobile Dream Network, GPRS connection to the Internet, nokia.com, as well as WiFi, in the previous user man
,20); INSERT into EMP VALUES (7901, ' Kik ', ' clerk ', 7900, ' 1981-12-3 ', 1900,0,30); Open the Created table:If the names of all employees and their immediate superiors are listed, we can do so by self-connection:Select E.ename, (select ename from emp d WHERE d.empno=e.mgr) as the boss from EMP E;Results of the query:The above is a staff information table, if I want to query this table each employee's boss, then must use the self-connection to q
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